This is a different sort of sewing project for Julie or Ivy. Colorblock shirts
were a popular funky shirt style from the 1970s. You can Google some image
examples ... or, just look on the cover of Julie's Journey.

BEFORE YOU START TO GATHER YOUR MATERIALS, please consider that in
the 1970s, people (obviously) coordinated colors differently. Julie and Ivy
would not have had a delicate pink, lavender and baby blue affair.
Colors were bold and very contrasting. Go look some examples up on the Internet
before picking your colors. I got my color scheme from an outfit I found
in an old Sears-Roebuck catalog. Okay, so consider your basic shirt pattern.

In typical, you take said pattern, put it down on the cloth, cut it out and
sew it up, right?

This time, we're going to piece together a piece of cloth to be slightly
larger then the pattern before we cut. Start cutting squares and rectangles
and fitting them together until you get something similar to this:

Make sure it's bigger than your pattern. You'll need enough 'blocks' to make
two sleeves, a front, two backs, and whatever collar you were planning to
put on it.

Sew the separate pieces together on your machine. It's exactly like piercing
a quilt together at this point.

IRON THE EVER LOVING HELL OUT OF THE PIECES. Iron them twice. Three
times. Iron iron iron. This project will come out looking awful if
you don't work with totally flat pieces.

NOW, treat it like a regular sewing project. Pin your pattern on the pieces,
and cut them out as usual. Start like this:

And you should get stuff like this.

Sew it together like a normal shirt pattern. Here's my finished one. Yours
will look different because of the different colors, of course, and the fact
that I'm sure you didn't put your blocks together the same way.